1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
cricket20 [7]
3 years ago
11

Two cars, a and b, are traveling with the same speed of 40. 0 m/s, each having started from rest. Car a has a mass of 1200 kg, a

nd car b has a mass of 2000 kg. Compared to the work required to bring car a up to speed, how much additional work is required to bring car b up to speed?.
Physics
1 answer:
Goshia [24]3 years ago
7 0
W=K_B-K_A
W=m_B v^2/2-m_A v^2/2=(m_B-m_A)v^2/2
W=(2000-1200) 〖40〗^2/2=640000 J=640 kJ.

You might be interested in
blank refers to the method of spreading fertilizer evenly over the entire field by hand it is done at the blank stage
Andrej [43]

Answer:

Broadcasting is the method, not sure about the stage it is done in

Explanation:

8 0
3 years ago
What kind of water temperature lowers the dissolved oxygen
ehidna [41]
<h3>Answer</h3>

At a high temperature above 20° oxygen solubility starts to decrease.

<h3>Explanation</h3>

Oxygen, O2 is a very essential component of water as we can see in its chemical formula h2O.

The solubility of oxygen decreases as temperature increases. This means that warmer water will have less dissolved oxygen than does cooler water.

<h3>Other factors that affects oxygen solubility in water</h3>

Salt levels

higher the salt levels in water, lower will be oxygen in it.

Pressure

Water at lower altitudes can hold more dissolved oxygen than water at higher altitudes because dissolved oxygen will increase as pressure increases.

5 0
3 years ago
Read 2 more answers
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?
DIA [1.3K]

The potential energy decreases while the kinetic energy increases.



7 0
3 years ago
Read 2 more answers
If a truck has the mass of 2,000 kilometres and a velocity of 35 m/s, what is the momentum
alexira [117]

Answer:

<h2>70,000 kg.m/s</h2>

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question we have

momentum = 2000 × 35

We have the final answer as

<h3>70,000 kg.m/s</h3>

Hope this helps you

5 0
2 years ago
Mass is 56.8 g and the volume is 10 mL what is the density
scoundrel [369]
Answer: 5.68g/ML.

Explanation; Divide the mass of the unknown substance and the volume of the unknown substance and you will have your answer.

Hope this helps! ^^ if you can pls mark me brainiest!
6 0
3 years ago
Other questions:
  • A piston above liquid in a closed container has an area of 1m2. The piston carries a load of 350 kg. What will be the external p
    11·2 answers
  • A softball is fouled off with a vertical velocity of 20 m/s and a horizontal velocity of 15 m/s. what is the resultant velocity
    5·1 answer
  • Scientists can estimate the age of a planetary surface by counting __________. scientists can estimate the age of a planetary su
    15·1 answer
  • What does the x represent on a motion graph?
    14·2 answers
  • An 81.5-kg man stands on a horizontal surface.
    11·1 answer
  • The Whirlpool galaxy is about 30 million light-years away. If you were in a spaceship that could travel at half of the speed of
    15·1 answer
  • As volume increases mass will__
    9·1 answer
  • A proton moves with a speed of 1.17 105 m/s through Earth's magnetic field, which has a value of 50.0 µT at a particular locatio
    12·1 answer
  • A 3.00-- kg rifle fires a 0.00500 m/s. Which force is greater in magnitude: (i) the force that the kg bullet at a speed of 300 r
    5·1 answer
  • Why does an ice cube melt in your hand? Question 3 options: The ice remains in a solid state even though heat is applied The tem
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!